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<div class="title">Sha1.h</div>  </div>
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<a href="_sha1_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">*       Sha1.h</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">*       Copyright (C) 1998</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">*       Paul E. Jones &lt;paulej@acm.org&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">*       All Rights Reserved.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">*****************************************************************************</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">*       $Id: sha1.h,v 1.4 2001/03/20 06:25:06 paulej Exp $</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">*****************************************************************************</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">*       Description:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">*               This class implements the Secure Hashing Standard as defined</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">*               in FIPS PUB 180-1 published April 17, 1995.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">*               Many of the variable names in this class, especially the single</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">*               character names, were used because those were the names used</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">*               in the publication.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">*               Please read the file sha1.cpp for more information.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#ifndef _SHA1_H_</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define _SHA1_H_</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="class_s_h_a1.html">   27</a></span>&#160;<span class="keyword">class </span><a class="code" href="class_s_h_a1.html">SHA1</a></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;{</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        <a class="code" href="class_s_h_a1.html#ad49a5108ffd6996b1133bf41224ff726">SHA1</a>();</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        <span class="keyword">virtual</span> <a class="code" href="class_s_h_a1.html#a8485d7c14fa29286cd3c7acfe438606d">~SHA1</a>();</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">                *       Re-initialize the class</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#accec3092d91c84d7e71d32c681357119">Reset</a>();</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">                *       Returns the message digest</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="class_s_h_a1.html#ab374ecf64d54cc133805322370f3b0f1">Result</a>(<span class="keywordtype">unsigned</span> *message_digest_array);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">                *       Provide input to SHA1</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(     <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>     *message_array,</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        <span class="keywordtype">unsigned</span>                        length);</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(     <span class="keyword">const</span> <span class="keywordtype">char</span>      *message_array,</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        <span class="keywordtype">unsigned</span>        length);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(<span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        <a class="code" href="class_s_h_a1.html">SHA1</a>&amp; <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator&lt;&lt;</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *message_array);</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <a class="code" href="class_s_h_a1.html">SHA1</a>&amp; <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator&lt;&lt;</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *message_array);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        <a class="code" href="class_s_h_a1.html">SHA1</a>&amp; <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator&lt;&lt;</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <a class="code" href="class_s_h_a1.html">SHA1</a>&amp; <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator&lt;&lt;</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">                *       Process the next 512 bits of the message</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <span class="keywordtype">void</span> ProcessMessageBlock();</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">                *       Pads the current message block to 512 bits</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <span class="keywordtype">void</span> PadMessage();</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">                *       Performs a circular left shift operation</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">                */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> CircularShift(<span class="keywordtype">int</span> bits, <span class="keywordtype">unsigned</span> word);</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keywordtype">unsigned</span> H[5];                                          <span class="comment">// Message digest buffers</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="keywordtype">unsigned</span> Length_Low;                            <span class="comment">// Message length in bits</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keywordtype">unsigned</span> Length_High;                           <span class="comment">// Message length in bits</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> Message_Block[64];        <span class="comment">// 512-bit message blocks</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordtype">int</span> Message_Block_Index;                        <span class="comment">// Index into message block array</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        <span class="keywordtype">bool</span> Computed;                                          <span class="comment">// Is the digest computed?</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="keywordtype">bool</span> Corrupted;                                         <span class="comment">// Is the message digest corruped?</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        </div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;};</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#endif</span></div>
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